How to Remove Duplicates from a Single Column Table

I have a table like Number_tb How to remove duplicates in this table, One way is to create a new table with unique entry from the Number_tb . Is there any other way. There is no id here as MYSQL does have the feature like ms server.
Number_tb
n_id
1
1
2
2
3
2
4
5
5
6
Thanks in advance.

The derived table works like a temporary table without having to make one.
You may be able to turn this into a delete but I didn't get it to work
because of the variables I think. Use a 'where row_number > 1' at the
bottom of query to only show the duplicates. A stored procedure may do the
job, but this is a start.

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